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Finding the Fourth Proportional to 1,298.48, 1,945.48 and 837.32

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Solution

The fourth proportional to 1,298.48, 1,945.48 and 837.32 is: 1,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.48 : 1,945.48 = 837.32 : x
  2. Step 2: Convert to fraction form
    1,298.48/1,945.48 = 837.32/x
  3. Step 3: Cross multiply
    1,298.48x = 1,945.48 × 837.32
  4. Step 4: Simplify right side
    1,298.48x = 1,628,989.31
  5. Step 5: Solve for x
    x = 1,628,989.31/1,298.48
  6. Step 6: Final answer
    x = 1,254.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.